Intercomparison of methods for calculating potential evaporation in regional and global water balance models

Five methods (Thornthwaite, Hamon, Jensen-Haise, Turc, and Penman) for estimating potential evaporation for a reference surface (PEr) were compared to four methods (Priestley-Taylor, McNaughton-Black, Penman-Monteith, and Shuttleworth-Wallace) for estimating surface-dependent potential evaporation (...

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Bibliographic Details
Published in:Water resources research 1996-07, Vol.32 (7), p.2315-2321
Main Authors: Federer, C.A. (U.S.D.A., FS, Durham, NH.), Vorosmarty, C, Fekete, B
Format: Article
Language:English
Subjects:
ALASKA
APLICACIONES DEL ORDENADOR
APPLICATION DES ORDINATEURS
ARIZONA
BALANCE HIDRICO
BILAN HYDRIQUE
CAMBIO CLIMATICO
CHANGEMENT CLIMATIQUE
CLIMATIC CHANGE
CLIMATIC FACTORS
COMPUTER APPLICATIONS
COMPUTER SIMULATION
DAKOTA DEL SUR
DAKOTA DU SUD
ESTIMATION
EVAPORACION
EVAPORATION
FACTEUR CLIMATIQUE
FACTORES CLIMATICOS
GEORGIA (EUA)
GEORGIA (USA)
GEORGIE (EU)
MAINE
MODELE DE SIMULATION
MODELOS DE SIMULACION
PORTO RICO
PUERTO RICO
SIMULACION
SIMULATION
SIMULATION MODELS
SOUTH DAKOTA
TEMPS METEOROLOGIQUE
TIEMPO METEOROLOGICO
VEGETACION
VEGETATION
WASHINGTON
WATER BALANCE
WEATHER
WEATHER DATA
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Summary:Five methods (Thornthwaite, Hamon, Jensen-Haise, Turc, and Penman) for estimating potential evaporation for a reference surface (PEr) were compared to four methods (Priestley-Taylor, McNaughton-Black, Penman-Monteith, and Shuttleworth-Wallace) for estimating surface-dependent potential evaporation (PEs) using three cover types at each of seven locations from Fairbanks, Alaska, to San Juan, Puerto Rico. For annual PE the PEs methods generally agreed with the PEr methods, but for many locations, differences among methods were hundreds of millimeters per year. No methods were consistently low or high. Three of the PEs methods depend strongly on maximum leaf conductance, for which Korner [1994] provided satisfactory values by cover type. Potential interception (PEi) can only be estimated appropriately for all cover types by the Shuttleworth-Wallace method. Use of 5-day or monthly input data did not greatly degrade results, so use of monthly data to generate PE estimates appears warranted in global water balance models
ISSN:0043-1397
1944-7973
DOI:10.1029/96WR00801